I just bought a Pixel 3 XL to replace my old Galaxy S5. On the Pixel, I get full-screen pop-up ads right in the middle of using an app. It happens on many apps. It doesn't appear to be related to the app itself because it happens on apps that I have written myself and downloaded to the phone directly from Android Studio. Has anyone else seen this behavior? If so do you know how to stop it? (I have disabled notifications on all the apps, but that didn't help.)